The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 1976
Filed:
Oct. 30, 1972
Applicant:
Inventor:
Milos S Bil, Forest Hills, NY (US);
Assignee:
Clairol Incorporated, New York, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
260576 ;
Abstract
Prepares 2-nitro-4-amino-N-phenylaniline by reacting 4-fluoro-3-nitroaniline at a temperature of at least about 140.degree.C and in a large molar excess of aniline e.g. molar ratio of aniline to 4-fluoro-3-nitroaniline being at least about 5:1.